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E. STRANSZKY.

sLEcTmcAL soLoEmNs mon.

APPLICATION FILED MAY 2l. |918.

Patentedept. 2,1919.

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I E. smuszxv. ELECTRICAL SOLDERING IRON.-

APPLCATIDI FILED HAV 2. IQIB.

1,315,172. Patented Sept. 2, 1919.

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ngc/z UNITED STATES PATENT OFFICE.

EMIL SIBAIQ'SZKY,L OF DOVER, OHIO, ASSIGNOR TO THE DOVER MANUFACTURING COMPANY, OF DOVER, OHIO, A CORPORATION 0F OHIO.

ELECTRICAL SOLDERING-IBON.

Specification of Letters Patent.

Patented Sept. 2, 1919.

Application led May 27, 1918. Serial No. 236,878.

To all whom 'it may concer/n:

Be it known that I, EMIL STRANszKY, a citizen of the United States, resident of Dover, county of Tuscarawas, and State of Ohio, have invented new and useful Improvements in Electrical Soldering-Irons, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention relates to electrically heated soldering irons, its objects being to provide an iron of this character which will be mechanically eiiicient in its construction and in its operation and which at the same time will be assembled in a manner such that it will permit of a ready removal and replacement of its constituent parts. The said invention consists of means hereinafter described and particularly set forth in the claims.

The annexed drawings and the following description set forth in detail certain means embodying my invention, the disclosed means, however, constituting but one of various mechanical forms in which the principles of the invention may be employed.

In said annexed drawings:

Figure 1 represents a side elevation of an electric soldering iron embodying my invention.

Fig. 2 represents an axial section of such iron.

Fig. 3 represents a transverse section upon the plane indicated by line III-III in Fig. 2.

Fig. 4 represents a transverse section taken upon the plane indicated by line IV-IV, Fig. 2.

Fig. 5 represents a side elevation of the heating member together with attached parts, the cement filling the upper horizontal grooves in which the resistance wire lies, being omitted.

Fig. 6 represents an axial section of said heating member, taken upon the plane at right angles to the plane of elevation of Fig. 5.

Fig. 7 represents a cross-section taken upon the plane indicated by line VII-VII in Fig. 6.

Fig. 8 represents an axial section of the grip portion of the handle.

- Fig. 9 represents a side elevation of the mterior portion of the soldering member, Fig. 10 represents a top plan of such portion of the soldering member, and Fig. 11 represents an axial section of the same.

Fig. 12 represents a side elevation of the outer detachable portion of the soldering member.

Fig. 13 represents a side elevation of the outer tubular casing member, and Fig. 14 represents a bottom plan of same.

Fig. 15 represents a side elevation of one portion of the handle and Fig. 16 an axial section of same.

Fig. 17 represents an end elevation of such handle portion.

The illustrated embodlnent of my invention comprises an outer tubular casing member 1 made preferably of a comparatively light steel tubing. Fitting in and readily removable from the interior of this casing member is a tubular member 2 made of non-heat-conducting material such as asbestos or similar material. This nonheat-conducting member, therefore, forms a removable interior lining for the tubular casing member 1. As illustrated, this lining member is of less length than the tubular casing member. Fitting in and removable from the interior of the member 2 is a heating member 3, Figs. 5 and 6. This heating member consists of a tubular element 4 open at one end and closed at the other end by means of a cap 5` both member 4 and cap 5 being made of refractory material such as clay, the cap 5 being suitably cemented in place so as to be' permanently secured therein. Mounted upon the exterior of this tubular element 4 is a resistance wire 6 preferably laid in a helical groove 7 and secured in such groove by means of a suitable dielectric cement. An exterior longitudinal groove 8 is formed in the member 4 in which the return portion of the resistance wire may be laid and wherein such returned portion is suitably secured by cementing, the said groove being sufficiently deep to permit this returned portion to be suitably separated from the helical convolutions of the wire, as will be readily understood by those skilled in the art and as clearly shown in Fig. 7 The outer portion of the cap 5 is formed with two alined grooves 9 in which portions of the resistance wire are laid and cemented, as shown in Fig. 6, the continuation of said wire passing on through duets 10Il formed in a refractory tu'be'l() projecting into and detachable from the cap 5. he one groove 9 registers with the longitudinal .groove 8. ln this manner it will be seen that the resistance wire is completely ineased and protected against Contact with any of the oonducting portions of the device.

The soldering element of the iron consists of `an inner part 11, Fig, 9, and an outer part 12, Fig. 12. This inner part is formed with a fiange 18 and with a body portion 14, the latter projectingr into the interior of the heating member 3 and readily removable therefrom, the Harige 13 fittingr into the interior and formingr a closure for the end of the casing member 1 as shown in Fig. 2. The body portion 14 is formed with a groove 15 which receives the longitudinal projection 16 which is formed as a result of the forniation of the groove 8 on the exterior of member 4. The outer part l2 of the soldering member is formed with a threaded portion 17 which fits a threaded bore 18 of the interior member 11. This soldering member is secured to the easing member. by means of nuts 18", Fig. 1, adapted to engage studs 19. seeured to the flange 13, which studs pass through slots 19l in member l, Fig. 13.

The other end of the casmg member 1s closed by a handle member 20, Figs. 15 and 16, which consists of a tubular portion 21 and a flange portion 22, the latter fitting 1n the upper end of the casing member and being provided with studs 2-2a adapted t0 be engaged by nuts 23 passingV through slots 23 whereby said handle member is removably secured in place. It will thus be noted that the heating member and interior lin ing are included between the iiange 22 of member` 2.0 and the tiange 13v ofthe soldering member. It willalso be noted-v tlnat all the parte. thus ferv dsrlbl are readily def tachable and hence removable from. eaeh other.

rlhe interior offmernber 291eeeiyeq the tube 10. and its exterior isprov1ded. with a threaded portion 21.- which engages. the threaded interior of a. metal ierrule 2,4 se- Qured to. the grip member 2110i thefhmdl Suitable. means are. provlded, for connect-4 ing, the. terminalsv of the reslstanpe wlres with wires. 26 of a suitable cord, for cone meetingthe iron. with the. current These connecting. means are` miem y.

mou ted. upon the-upper end, et e tubnler mein r. 20, and, ineased within the grip membervf.

1. ,n anelectric soldering-Iron, the. om.- bi. tip'nofien outertuhular asngfmem er: an inem l10n.- heat- -eengiuetlpg Bomber. ot tubular @miettes @ralliement red imc!l member; a heating member consisting of a tubular supporting elem-ent of refractory material open at one end and having a resistance element mounted thereon; a soldering member fitting' into one end of said easing member and extending into the interior of said heating' member; a member fitting into and closing the other end of Said easing member; and :i suitable handle and electrical connections for said resistance element.

2. ln an electric soldering iron, the combination of an outer tubular easing element, an inner non-l'ieat-condueting member of tubular form fitting the interior of said casing member; a heating memberconsisting of a tubular supporting element and a resistance element mounted thereon; said heating element fitting in and removable from said nonheat oondurting member; a soldering member fitting into one end of said member and extending into the interior of said heating member: removable means for closing the other end of said casing member; a suitable liaudie; and suitable electrical connections for said resistance element.

3. In an electric soldering iron, the oombination of an outer tubular easing member; an inner non-heatconducting member of tubular form titting in and removable from the interior of said easing member; a tubular element of refractory material adapted to support a resistance element and fitting in and removable from said non-heat-conducting member; a soldering member adapted to. close one end of said easing member and extending into the interior of said heating member; and. removable means for closing the other end of said tubuflar casing member.

4. In an electric soldering iron, the combination of an outer tubular easing member; an inner non-heat-conducting member oi tubular forml fitting into the interior of said casing member and removable therefrom.; a ,tubular element of retraetory maherial adapted to support a resistance element and fitting in and removable from the interior of said. non-heat-oondueting member; a soldering member consisting of an interior portion extending into4 the interior o said heating-member and, formedwitlr an end yflange adapted toy fit in and, close; one end, of seid. casing member; and, an outer soldering, head. removable from said. interior portion of said soldering member; and moans closing and removable from the: oppositend..

5.v In, an electric Soldering iron, the oom.- bination of an outer tubular casing membern; en. inner. nonfheat-.oonductingmember off tubular` form, fitting: in' andi removable from the interior of said casing member'and fgjiznmiligr,A `n.4 interior lining therefor; a: tubular element of reirqetoryi materiali open at one end and closed at the other, and adapted to support a resistance element, said supporting element tting in and removable from the interior of said non-heatoonducting member; a soldering member consistin of an inner and an outer member detachab e from each other, said inner member projecting into the interior through the open end thereof and formed with a flange adapted to t in and form a removable closure for the correspondn end of said casing member, and a remova le closure for the opposite end of the latter; said non-heatconducting and tubular sup orting element being included between said) closing means and flange.

6. In an electric soldering iron, the combination of an outer tubular casing member; an inner non heat-conducting member of tubular form fitting in and removable from the interior of said casing member; a tubular element of refractory material su porting a resistance element and fittin 1n and removable from said non heat-con ucting member; a soldering member closin one end of said casing member and exten ing into the interior of said heating member; a; removable element of refracto material for closing the other end o said tubular element of refractory material; and removable means for closing the other end of said tubular casing member.

Signed by me this 17 da of May, 1918. EMIL TRANSZKY.

Copies of thin patent may be obtained for ve cents each, by addressing the "Commissioner of Patents, Washington, Il). C. 

